Lock



Patented Sept. 26, 1922.

cuentes kw. siirnnnrznn,l or Krnesron, New Yonai.'

,- LOCK.

Application mea February 1e, 192i. semina. 446,035,

T @ZZ/whom t may concern.' A

Be 1t known that 1,' CHARLES W: SNED'E- kan, a citizen of the United States, residing at Kingston, in the county of Ulster and State of New York, have invented a new and useful Loclnof which the following is a speciiication. i y

`The device forming the subjectjmatter ofr this application is a pad lock, and the invention aims to improve the 'construction of the tumblers, and to provide novelmeansv for mounting,v controllingy and operating the tumblers, yto theend that the lock vmay be adapted readily tokeysoi dierent sorts.

In the drawings z-Figure 1 showsinelevation one member of thelockfthe othery member of the lock being removed, the shackle, thetuinblers and the key bein'gin place; Figure 2 is a plan 'showing the other member of the lock; Figure 3 is a section on the line 3-3 of Figure 1"; Figure 4 is a section on the line 4-4 of Figure 1; Figure 5 is a section on the line 5-'55 of Figure 1; Figure 6 is a plan showing the master key; Figure 7 is across section lont-he line 7*-7 of Figure 6; Figure 8 is a plan showing the key which, ordinarily, is used in opening the lock. i

The lock forming the subject matter lof this application comprises a case including two members, one of which is delineated in Figure 1, the other ofwhich is shown in Figure 2. L

The member of the lock case depicted'in Figure 1 embodies a plate 1, an end2,v and end 3, and sides 4 and 5,4 the sideshaving -outstanding ears 6. A rack 7 is'iormed integrally with the side 4 and with the plate 1 and extends longitudinallygof the lock, the teeth of the rack 7 extending transversely of the lock, that is', from the side 4 toward the side 5. A raekS extends longitudinally of thefloek7 in parallel relation to the rack 7, `between the'ends'2 and 3, the rack 8 preferably being formed integrally with the plate 1. Reinfoi'cing tinsy 9 are fashioned integrally with the plate 1 and extend, transversely of the lock,y between the 1aeks7 and 3. A rack l'O'extends `longitudinally of the lock, between the ends 2 and 3. the rack 19 being located parallel to the rack 8, the teeth ofthe rack l0 extending transversely oiA the locks like the teeth of the rack 8 and the teeth of the rack 7. The space between the rack 8 andthe rack 10 forms keyway v17.y lin the end' 3 y `there is a key` hole 18 alined with the keyway 17. `The space between the rank 19 and the side y5 forms afguide grooye 11." The guide groover 11 opens through the end 2, as shown at 16. At one end of theguide groove 11, a lateral enlargement 12 is formed in the side 5,' the enlargement 12 defining a rshoulder 14. The end` 2 has a depression 15.

Passing to the member of thelockcase which is shown Figure '2, there is provided a plate 19 having ends 20 and 21, and sides 22 and 23. The side 22 is provided vwith a rack 24,y the teeth of which project inwardly, that"is,` atfright anglestoy the teeth of the rackslO, 8 and 7. rin opening 25 is formed in the end 20 adjacent to the 4rac-k 24. Adjaeentto the side 23,.the end 2O has adepression 26. A. rib .21is formed integrally with the plate 19 and extends between theends 20.and 217 the trib being dislposed close yto' the side 23 and parallel n thereto. Wards 2S Aproject laterally from the rib`27,' toward the rack 24 and preferably are formed integrally with the "plate 19. rlhe sides 23. and-22 haveoutstanding ears`29. V ,y M Y rEhe numeral 30 marks 'a shacklejhaving a ktree end 31 and including ashank 32 provided with a rack Atits inner end, the shank 32 of the shackle 30 is supplied with a projection 34.` n

- Tumblers 35 are provided, the same being .in the 'form of rods whichlpreierably,hay@

some resiliency. y

The numeral 37 marks akey, comprising aihead 38 and a body 39, 'the body having transversely proj ectingl ngers 40 provided in their Iends with notches 41.

Aniaster key 42 is supplied,` thesame including a head 43r and a body 44 havingr an outstanding flange 45 provided with notches 46; f

-The shank 32 of the shackle 3G is rplaced `in the guide groove 11, as shown in Figure 1,- the projection 34f'on the shank oi' the shackle being received'in the lateral enlargement 12 of the guide groove 11. f rlhe projection 34 cooperates with the shoulder 14 to prevent-the vcomplete withdrawal of the shank 320:6` the shackle 30 ronithe lock case. The key 37 is inserted into the key way 17 through the key hole 13, until the inner end vof the key abuts against the end 2a The tumblers 35 are mounted in place, in

Cri

the tumbler being held in place, because the rib 27 engages the tumbler adjacent tothe rack 7 (see Figure The intermediate portion of the tumbler 35 cooperates with* the rack 8, the tumblerextending across the key way 17 and cooperating with the racky 10. rlhe tumblers 35, adjacent to their 'tree ends, are engaged'with the rack on the shank 32 oit the shackle 30: consequently', the shackle cannot be moved outwardly.

Vhen the member of the look case shown in Figure 2 is placed on the member oit the lock case shown in Figure 1, the side 22 cooperates with the side andthe side 23 coi operates with the side Ll. The depression 26 registers with the depression and terms a seat for the end 31 oit the shackle 23,0. The shank of the shackle operates inthe opening 25. The rib 27 bears on the tumblers as hereinbefore explained. Those ends of the tumblers 35 which are adj acent to the shank 32 of the shackle 3G are re ceived slidably between the teeth oi' the rack 24 (Figure 3), it being recalled that the` teeth of the rack 2% project right angles to the'teeth ot' theracks 10,18 and 7. ilie wards'28 extend across the key way 17, as shown in Figure Securing elements connect the ears 29and 6 oi the members or" the lock case, and hold the said members together. v

- In practical operation, the body 39 of the key 37 is inserted into the key way 17 through the hole A18. 1When theinner end of the keyabuts against the member 2, the fingers 10 on the key are alined with the tumblers. lVhen the key is rotated, the tumblers 35 are received in the notches 11 ofthe fingers of the key and are lifted out of engagement withthe rack 33 Von the shank 32 of the shackle 30, the shanko' the shackle thus being set tree for outward sliding movement; YNhen the free ends et the tumblers 35 are moved as aforesaid, the said ends reciprocate between the teeth ot' the rack 24Eon` the. member ot the look case shown in Figure 2. Note Figure 3 oit the drawings atthis point. j f

In order to change the lock, the keyA 37 is replaced by another key constructedfin gcneral like the key 37 but having itsriingers 41:0 spaced more or less widely apart than are the fingers on the key 37, the tumblers 35 being shifted to match up with the lingers of the new key. It is obvious that thevlock may be adapted to many different keys; owing to the construction alludedto.

ones

It is impossible to insert a tool into the key way 17 and move the tumblers 35 out of engagement with the rack on the shank of the shackle 30, because the wards 28 project far enough toward the plate 1 to prevent such an operation (see Figure 5),

The master key L12 may be used for opening any and all locks of the general class described, since the notches in the flange of the master key are adapted to receive the wards 28 and to permit a rotation ol' the master key. n n n' Having thus described the invention, what is claimed is 1. A padlock comprising a having' racks and provided with a key way; tumbler yrods shiftable in the racks, to ad pt the lock to diiiferent keys, the rods being extended across the key way, one end of cach tumbler rod being slidable in one rack; means farried by the case 'for holding` the other end of each tumbler inthe othcrrL f and aishackle'comprising a part slidable 'in the case and haring means tor cooperating with the tumblers.

2. A padlock comprising a case haring a key-way; a tumbler rody extended trans versely of the key-way means vfor mountin the tumbler rod in adjusted positions lon tudinally of the keyway to permit the lock to be opened by different keys; and a shackle having means wherewith the 'tumbler engages. y

3. A padlock comprising a case having` a rack and a key-way; a spring tumbler rod extended transversely oit the. key way, thc tumbler rod heilig shiftable along` the rack to permit the lock to be opened by .dil'lierentkeys, one end cit the rod being received in the rack; meansl tor holding'y said end ot the rod in .the rack; and a shacklehaving means wherewith the tumbler engages;` i.

a. A pad-lock comprising a case ,'irovidrd withspaced racks, and having a lrey-ivay.; a tumblerv rodextended transversely of the key-way, one end ot the tumbler rodbeing received in one rack, and the other end ot the tumbler rod `being slidable in the other rack, the tumbler rod being shilitable in ythe racks to enablethe lock to be` opened by diierent-keys; and a shackle having means wherewiththe tumbler rod engages.

In testimony that l claim tls 'i as my own, I have hereto a'liixed my ture in the presence oit two witnesses.

CHARLES W. SNEDEI'ER.

Vitnesses: i

THOMAS WELCH.

EDWARD T. MCLIN. 

